BE893082A - Solar energy distn. plant for desalination of sea-water - uses soaked evapn. cloth in hot compartment of solar heated thermosiphon - Google Patents

Solar energy distn. plant for desalination of sea-water - uses soaked evapn. cloth in hot compartment of solar heated thermosiphon Download PDF

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Publication number
BE893082A
BE893082A BE0/208009A BE208009A BE893082A BE 893082 A BE893082 A BE 893082A BE 0/208009 A BE0/208009 A BE 0/208009A BE 208009 A BE208009 A BE 208009A BE 893082 A BE893082 A BE 893082A
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BE
Belgium
Prior art keywords
compartment
water
emi
evapn
solar
Prior art date
Application number
BE0/208009A
Other languages
French (fr)
Original Assignee
Labrique Jean Pierre
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Labrique Jean Pierre filed Critical Labrique Jean Pierre
Priority to BE0/208009A priority Critical patent/BE893082A/en
Publication of BE893082A publication Critical patent/BE893082A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/14Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/138Water desalination using renewable energy
    • Y02A20/142Solar thermal; Photovoltaics
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment
    • Y02A20/208Off-grid powered water treatment
    • Y02A20/211Solar-powered water purification
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment
    • Y02A20/208Off-grid powered water treatment
    • Y02A20/212Solar-powered wastewater sewage treatment, e.g. spray evaporation

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

The installation comprises a thermosiphon made up of two compartments sepd. by a thermally insulating partition but with the two compartments communicating with each other at both ends of the partition. The compartment facing the sun is the hot compartment and the compartment on the other side of the partition is the cold compartment. The hot compartment contains an evapn. cloth which is soaked with tepid sea-water to create a rising draught of moist air. The cold compartment has a cooled condenser wall opposite the partition and this creates a downdraught in the cold compartment. The outer wall of the two compartments is pref. formed by U-bending a single, hollow, honeycombed sheet through which water can be circulated. The seawater is passed first through the outer wall of the cold compartment and then through the outer wall of the hot compartment. This preheats the water which is then run on to the evapn. cloth. The installation is used to produce drinking water from seawater etc. Compared with earlier solar distn. plants the new design produces a higher yield at lower solar temps.

Description

       

   <EMI ID=1.1>  La présente invention est relative à un distillateur solaire pour la distillation d'eaux salées, en particulier de l'eau de mer.

  
Par rapport aux distillateurs solaires habituels, le distillateur selon l'invention a les avantages d'un meilleur rendement à des températures moins élevées, et d'une moindre sensibilité à l'altération de la surface exposée au soleil.

  
Dans ce but, le distillateur selon l'invention comporte un thermosiphon constitué par deux compartiments sépares par une cloison, mais réunis largement entre eux à leurs extrémités. L'un des dits compartiments - le compartiment chaud - contient un drap d'évaporation imbibé d'eau salée tiède y créant un courant ascendant d'air humide. tandis que l'autre - le compartiment froid - présente une surface de condensation y créant un courant descendant. Ce thermosiphon permet

  
de diminuer les pertes thermiques par rayonnement et favorise le processus d'évaporation-condensation.

  
Suivant une autre caractéristique de l'invention, les dits compartiments sont limités vers l'extérieur par une même plaque alvéolée formant un U dont les deux branches remplies d'eau sont

  
en vases communicants. Pour récupérer la chaleur de condensation

  
de la vapeur d'eau, les alvéoles de La dite plaque sont parcourues

  
par l'eau salée à distiller. 

  
Pour augmenter la lumière captée sous incidence oblique et diminuer les pertes par diffusion (causées surtout par la condensation en gouttelettes), la face antérieure de la dite plaque alvéolée est mouchetée par une peinture noire mate laissant des zones tran-sparentes entre les petites taches de peinture.

  
D'autres détails et particularités de l'invention apparaîtront au cours de la description des dessins annexés au présent mémoire

  
 <EMI ID=2.1> 

  
une forme de réalisation de l'invention.

  
La figure 1 est un schéma d'ensemble avec une coupe verticale du distillateur solaire, suivant la longueur d'une alvéole. La figure 2 est une coupe perpendiculaire aux alvéoles, suivant <EMI ID=3.1>  La figure 3 représente un fragment de la plaque alvéolée.

  
L'eau salée à distiller - par exemple l'eau de mer &#65533; est amenée d'abord dans le réservoir 1 à partir duquel elle est refoulée par la

  
 <EMI ID=4.1> 

  
moins incliné en fonction de la latitude du lieu.

  
Le distillateur 4 est limité sur la plus grande partie de sa

  
 <EMI ID=5.1>  

  
 <EMI ID=6.1> 

  
deux branches en vases communicants. Dans la forme représentée, l'eau remplissant les alvéoles est l'eau salée à distiller. Cette

  
 <EMI ID=7.1> 

  
longueur de 10 à 20 cm (à l'exception des alvéoles latérales qui ferment les extrémités de la poche 8).

  
Pendant le jour, l'eau salée est préchauffée en parcourant les

  
 <EMI ID=8.1> 

  
d'une surface totale -à peu près égale. Cn obtient facilement ce résultat - avec une incrustation définitive de la peinture dans le

  
 <EMI ID=9.1> 

  
peuvent être remplacées par de ainces bandes noires parallèles couvrant la face 9 au niveau de chacune des cloisons 7.

  
 <EMI ID=10.1>  reçoit un supplément de chaleur en étant éclairé par la partie de la  lumière qui a traversé la plaque 5. Ce drap peut être d'une seule 

  
pièce conne figuré ici, ou être constitué de bandes parallèles ou 

  
croisées, ayant entre elles des couloirs pour le dégagement de la 

  
vapeur. Pour permettre l'évaporation sur ses deux faces, le drap 11 

  
est supporta par un treillis non représenté. 

  
Le drap 11 est situe dans la chambre fermée constituant tout 

  
 <EMI ID=11.1> 

  
plaque 5, les tôles latérales 13 et le couvercle 14. Elle est divisée 

  
en deux compartiments: le compartiment froid 15 et le compartiment 

  
chaud 16 orienté vers le soleil et contenant le drap d'évaporation 11.  Ces deux compartiments sont séparés par la paroi 17 qui peut être aussi 

  
 <EMI ID=12.1> 

  
de déplacement de l'air humide de 10 ou 20 à 50 en/seconde.

  
Le trajet de l'air saturé est signalé par des flèches noires (fig. 1) Dans le compartiment 15, l'air humide est refroidi avec condensation

  
d'une partie de sa vapeur d'eau sur la face interne de la plaque alvéolée 5

  
 <EMI ID=13.1> 

  
remarquer que ce refroidissement a lieu surtout dans la partie supérieure du compartiment 15 où la différence entre la température de l'air humide et celle de l'eau salée est la plus grande.

  
Des chicanes non figurées favorisent le mélange de l'air humide

  
 <EMI ID=14.1> 

  
peut aussi être augmentée grâce à un petit ventilateur. 

  
L'air saturé passe ensuite dans le compartiment 16 où il est chauffé et saturé de vapeur d'eau à des températures croissantes

  
 <EMI ID=15.1> 

  
la vapeur d'eau émise par le drap d'évaporation 11 est condensée

  
sur la face interne de la plaque 5.

  
L'eau salée imbibant le drap 11 est d'une part chauffée par

  
la lumière solaire directe et d'autre part refroidie par la circulation d'air humide. Il en résulte d'ordinaire un léger refroidissement,

  
 <EMI ID=16.1> 

  
dans le drap 11. Par suite de l'évaporât ion, la concentration en sels de l'eau salée a légèrement augmenté pendant sa descente: elle est passée de 40 à 41 ou 42 g/litre, par exemple. A la partie inférieure du drap 11, l'eau salée est récoltée dans la gouttière 16 et canalisée jusqu'à la partie supérieure du réservoir 1 dont la température s'élève au cours de la journée.

  
L'eau distillée condensée sur la face interne de la plaque 5 dans les compartiments 15 et 16 est collectée à la partie inférieure du distillateur 4 et accumulée dans le réservoir 19.

  
Pendant la nuit, la chaleur contenue dans l'eau salée du réservoir 1 est utilisée pour une distillation qui bénéficie aussi

  
 <EMI ID=17.1> 

  
est alors répartie sur le drap 11 par la rampe perforée 20. La vapeur d'eau émise par l'eau salée ainsi refroidie est condensée sur la face interne de la plaque 5 (rendue conductrice de la chaleur par l'eau qui remplit les alvéoles); l'eau distillée récoltée pendant la nuit est aussi accumulée dans le réservoir 19. 

  
Lorsque la concentration, en sels de l'eau salée du réservoir 1

  
 <EMI ID=18.1> 

  
Le distillateur 4 est prévu pour une production aoyenne de
50 litres d'eau distillée par 24 h. Dans certaines régions il peut être nécessaire de placer une feuille transparente à environ 1 cm de la face 9, de manière à obtenir une couche d'air isolante. Bien entendu, la production peut atteindre le niveau souhaité

  
en utilisant un nombre suffisant de distillateurs 4, le (ou les)

  
 <EMI ID=19.1> 

  
salée au moins dix fois supérieur à la production journalière

  
d'eau distillée. 

  
Il est possible d'augmenter la production par distillateur 4 en distribuant pendant le jour - par la rampe 20 - un supplément d'eau salée tiède, chauffée par un capteur solaire (ou un autre moyen de chauffage) distinct du distillateur 4.

  
Il existe une autre possibilité intéressante lorsque l'eau salée d'origine a une température nettement plus élevée que celle de l'air en fin de nuit et à l'aube; c'est le cas pour l'eau de la Mer Rouge ou du Golfe. Si l'installation est près du littoral, l'eau de mer

  
 <EMI ID=20.1> 

  
en vue d'une production nocturne et matinale d'eau distillée. Cette production, comparable à la rosée, est aussi augmentée grâce au thermosiphon constitué par les compartiments 15 et 16.

  
Il est évident que l'invention n'est pas limitée à la forme de réalisation représentée et que bien des Bonifications peuvent être apportées dans la forme. la disposition, et la constitution de certains éléments, dans le cadre des revendications suivantes. 

REVENDICATIONS 

  
1. Distillateur solaire pour la distillation d'eaux salées. caractérisé  en ce qu'il comprend un thermosiphon composé de deux compartiments séparas

  
 <EMI ID=21.1> 

  
leurs extrémités, l'un des dits compartiments &#65533; le compartiment chaud comportant un drap d'évapcration imbibé d'eau salée tiède y créant un courant ascendant d'air humide, tandis que l'autre - le compartiment froid présente une surface de condensation y créant un courant descendant.

  
 <EMI ID=22.1> 



   <EMI ID = 1.1> The present invention relates to a solar still for the distillation of salt water, in particular sea water.

  
Compared with the usual solar stills, the still according to the invention has the advantages of a better yield at lower temperatures, and of a less sensitivity to the alteration of the surface exposed to the sun.

  
To this end, the still according to the invention comprises a thermosyphon constituted by two compartments separated by a partition, but largely joined together at their ends. One of the so-called compartments - the warm compartment - contains an evaporation sheet soaked in lukewarm salt water creating an ascending current of moist air. while the other - the cold compartment - has a condensing surface creating a downdraft. This thermosiphon allows

  
to reduce heat losses by radiation and promotes the evaporation-condensation process.

  
According to another characteristic of the invention, said compartments are limited towards the outside by the same honeycomb plate forming a U whose two branches filled with water are

  
in communicating vessels. To recover the heat of condensation

  
of water vapor, the cells of the said plate are traversed

  
with salt water to be distilled.

  
To increase the light captured at an oblique incidence and reduce the losses by diffusion (caused mainly by condensation in droplets), the anterior face of the said honeycomb plate is speckled with a matt black paint leaving transparent areas between the small spots of painting.

  
Other details and particularities of the invention will appear during the description of the drawings appended to this memo.

  
 <EMI ID = 2.1>

  
an embodiment of the invention.

  
Figure 1 is an overall diagram with a vertical section of the solar still, along the length of a cell. Figure 2 is a section perpendicular to the cells, according to <EMI ID = 3.1> Figure 3 shows a fragment of the alveolar plate.

  
Salt water to be distilled - for example sea water &#65533; is first brought into the tank 1 from which it is discharged by the

  
 <EMI ID = 4.1>

  
less inclined depending on the latitude of the place.

  
The still 4 is limited over most of its

  
 <EMI ID = 5.1>

  
 <EMI ID = 6.1>

  
two branches in communicating vases. In the form shown, the water filling the cells is the salt water to be distilled. This

  
 <EMI ID = 7.1>

  
length from 10 to 20 cm (with the exception of the side cells which close the ends of the bag 8).

  
During the day, the salt water is preheated through the

  
 <EMI ID = 8.1>

  
of a total surface - approximately equal. This is easily achieved - with a definitive overlay of the paint in the

  
 <EMI ID = 9.1>

  
may be replaced by thin parallel black bands covering the face 9 at the level of each of the partitions 7.

  
 <EMI ID = 10.1> receives additional heat by being lit by the part of the light which has passed through the plate 5. This sheet can be of one

  
conne piece shown here, or consist of parallel bands or

  
crossed, having between them corridors for the release of the

  
steam. To allow evaporation on both sides, the sheet 11

  
is supported by a trellis not shown.

  
The sheet 11 is located in the closed room constituting all

  
 <EMI ID = 11.1>

  
plate 5, the side plates 13 and the cover 14. It is divided

  
in two compartments: the cold compartment 15 and the compartment

  
hot 16 oriented towards the sun and containing the evaporative sheet 11. These two compartments are separated by the wall 17 which can also be

  
 <EMI ID = 12.1>

  
displacement of humid air from 10 or 20 to 50 in / second.

  
The path of saturated air is indicated by black arrows (fig. 1) In compartment 15, humid air is cooled with condensation

  
of part of its water vapor on the internal face of the honeycomb plate 5

  
 <EMI ID = 13.1>

  
note that this cooling takes place especially in the upper part of compartment 15 where the difference between the temperature of moist air and that of salt water is the greatest.

  
Unfigured baffles promote mixing of moist air

  
 <EMI ID = 14.1>

  
can also be increased with a small fan.

  
The saturated air then passes into compartment 16 where it is heated and saturated with water vapor at increasing temperatures

  
 <EMI ID = 15.1>

  
the water vapor emitted by the evaporation sheet 11 is condensed

  
on the internal face of the plate 5.

  
The salt water soaking the sheet 11 is on the one hand heated by

  
direct sunlight and on the other hand cooled by the circulation of humid air. This usually results in slight cooling,

  
 <EMI ID = 16.1>

  
in sheet 11. As a result of the evaporation, the salt concentration of salt water increased slightly during its descent: it went from 40 to 41 or 42 g / liter, for example. At the bottom of the sheet 11, the salt water is collected in the gutter 16 and channeled to the top of the tank 1, the temperature of which rises during the day.

  
The distilled water condensed on the internal face of the plate 5 in the compartments 15 and 16 is collected at the bottom of the still 4 and accumulated in the tank 19.

  
During the night, the heat contained in the salt water of tank 1 is used for a distillation which also benefits

  
 <EMI ID = 17.1>

  
is then distributed over the sheet 11 by the perforated ramp 20. The water vapor emitted by the salt water thus cooled is condensed on the internal face of the plate 5 (made conductive of heat by the water which fills the cells ); distilled water collected overnight is also accumulated in tank 19.

  
When the salt concentration in the salt water of the tank 1

  
 <EMI ID = 18.1>

  
The still 4 is intended for an average production of
50 liters of distilled water per 24 h. In some regions it may be necessary to place a transparent sheet about 1 cm from side 9, so as to obtain an insulating air layer. Of course, production can reach the desired level

  
using a sufficient number of stills 4, the (or)

  
 <EMI ID = 19.1>

  
salted at least ten times higher than daily production

  
distilled water.

  
It is possible to increase production by distiller 4 by distributing during the day - by ramp 20 - an additional warm salt water, heated by a solar collector (or another heating means) distinct from distiller 4.

  
There is another interesting possibility when the original salt water has a temperature significantly higher than that of the air at the end of the night and at dawn; this is the case for water from the Red Sea or the Gulf. If the facility is near the coast, seawater

  
 <EMI ID = 20.1>

  
for night and morning production of distilled water. This production, comparable to dew, is also increased thanks to the thermosiphon constituted by compartments 15 and 16.

  
It is obvious that the invention is not limited to the embodiment shown and that many Bonuses can be made in the form. the arrangement, and the constitution of certain elements, within the framework of the following claims.

CLAIMS

  
1. Solar still for the distillation of salt water. characterized in that it comprises a thermosiphon composed of two separate compartments

  
 <EMI ID = 21.1>

  
their ends, one of the so-called compartments &#65533; the hot compartment with an evapcration sheet soaked in warm salt water creating an ascending current of humid air, while the other - the cold compartment has a condensing surface creating a descending current there.

  
 <EMI ID = 22.1>


    

Claims (1)

<EMI ID=23.1>  <EMI ID = 23.1> moyens permettent la circulation de l'eau salée successivement à travers les deux branches du U, du compartiment froid vers le compartiment chaud. means allow the circulation of salt water successively through the two branches of the U, from the cold compartment to the hot compartment. 4. Distillateur selon la revendication 3, caractérisé en ce que les cloisons entre alvéoles sont coupées aux deux extrémités du U, de manière à former d'une part une poche et d'autre part un larmier. 4. A still according to claim 3, characterized in that the partitions between cells are cut at the two ends of the U, so as to form on the one hand a pocket and on the other hand a drip. 5. Distillateur selon l'une ou l'autre des revendications 1 à 4, caractérisé en ce que la. face du distillateur exposée au soleil est tachetée par une peinture absorbant la lumière, en laissant entre les taches des zones transparentes. 5. Distiller according to either of claims 1 to 4, characterized in that the. face of the still exposed to the sun is spotted with a light absorbing paint, leaving transparent areas between the spots. <EMI ID=24.1>  <EMI ID = 24.1> caractérisé en ce que le drap d'évaporation est placé à distance de la paroi d'isolation et peut être alimenté en eau salée par une rampe characterized in that the evaporation sheet is placed at a distance from the insulation wall and can be supplied with salt water by a ramp <EMI ID=25.1>  <EMI ID = 25.1> 7. Distillateur solaire pour la distillation d'eaux salées, en substance tel que décrit ci-dessus en référence aux dessins ci-annexés. 7. Solar still for the distillation of salt water, in substance as described above with reference to the attached drawings.
BE0/208009A 1982-05-05 1982-05-05 Solar energy distn. plant for desalination of sea-water - uses soaked evapn. cloth in hot compartment of solar heated thermosiphon BE893082A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE0/208009A BE893082A (en) 1982-05-05 1982-05-05 Solar energy distn. plant for desalination of sea-water - uses soaked evapn. cloth in hot compartment of solar heated thermosiphon

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Application Number Priority Date Filing Date Title
BE893082 1982-05-05
BE0/208009A BE893082A (en) 1982-05-05 1982-05-05 Solar energy distn. plant for desalination of sea-water - uses soaked evapn. cloth in hot compartment of solar heated thermosiphon

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3829725A1 (en) * 1988-08-30 1989-06-22 Lessing Helmut Apparatus for sterilising, purifying and/or desalting sea water or brackish water
DE3829464A1 (en) * 1988-08-31 1990-03-01 Ist Energietechnik Gmbh Apparatus for solar production of fresh water
FR2727957A1 (en) * 1994-12-08 1996-06-14 Sejourne Pierre Dominique Solar-powered water desalinator esp. for sea or brackish water
FR2953510A1 (en) * 2009-12-04 2011-06-10 Nicolas Beauquis Brackish water purifier with solar distillation comprises an enclosure divided into an evaporator zone and a condenser zone located behind the evaporator zone with respect to a transparent front face of the enclosure
FR3008406A1 (en) * 2013-07-15 2015-01-16 Henri Abiven WATER PURIFYING DEVICE IMPROPER TO CONSUMPTION BY CONDENSATION

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3829725A1 (en) * 1988-08-30 1989-06-22 Lessing Helmut Apparatus for sterilising, purifying and/or desalting sea water or brackish water
DE3829464A1 (en) * 1988-08-31 1990-03-01 Ist Energietechnik Gmbh Apparatus for solar production of fresh water
FR2727957A1 (en) * 1994-12-08 1996-06-14 Sejourne Pierre Dominique Solar-powered water desalinator esp. for sea or brackish water
FR2953510A1 (en) * 2009-12-04 2011-06-10 Nicolas Beauquis Brackish water purifier with solar distillation comprises an enclosure divided into an evaporator zone and a condenser zone located behind the evaporator zone with respect to a transparent front face of the enclosure
FR3008406A1 (en) * 2013-07-15 2015-01-16 Henri Abiven WATER PURIFYING DEVICE IMPROPER TO CONSUMPTION BY CONDENSATION

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